Method of making enhanced surface coating for light metal workpiece

A magnesium metal wheel, comprising:

• a magnesium metal matrix having an exposed surface;
• a magnesium oxide ceramic layer formed on at least a portion of the exposed surface;
• an electrostatic coating applied onto a least a portion of the magnesium oxide ceramic layer;
• and
• a powder material coating applied onto at least a portion of the electrostatic coating.

A method of providing an enhanced surface coating on a metal or alloy substrate, the method comprising:

• providing a metal or alloy substrate having an exposed surface;
• generating an oxide layer on the exposed surface of the substrate using a micro-arc oxidation process;
• applying a first coating layer onto the oxide layer using an electro-coating technique;
• and
• applying a second coating layer onto the first coating layer, the second coating layer comprising a powder material coating.